Shadowing Practice: Formation Of A Tropical Cyclone - Learn English Speaking with Video
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There are three basic stages in the life of a tropical cyclone,
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its origin or source, the mature stage and the dissipation stage,
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where it dies out.
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These occur in a continuous process,
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not as separate and distinct stages.
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Each stage may occur more than once during the life cycle,
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as the strength of the cyclone rises and falls.
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it may reach land, weaken,
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then go back out to sea where it strengthens once more.
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The formation of a cyclone depends upon the following conditions coinciding.
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A large, still and warm ocean area with a surface temperature that exceeds 26.5 degrees Celsius over an extended period.
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This allows a body of warm air to develop above the ocean's surface surface.
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Low altitude winds are also needed to form a tropical cyclone.
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As air warms over the ocean,
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it expands, becomes lighter and rises.
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Other local winds blow in to replace the air that has risen,
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then this air is also warmed and rises.
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The rising air contains huge amounts of moisture evaporated from the ocean's surface.
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As it rises, it cools,
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condensing to form huge clouds about 10km up in the troposphere.
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More warm air rushes in and rises,
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drawn by the draft above.
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The rising drafts of air carry moisture high into the atmosphere so that these clouds eventually become very thick and heavy.
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Condensation then releases the latent heat energy stored in the water vapor,
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providing the cyclone with more power.
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This creates a self-sustaining heat cycle.
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Drawn further upwards by the new release of energy,
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the clouds can grow to 12 to 15 kilometers high.
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The force created by the Earth's rotation on a tilted axis,
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the Coriolis effect, causes rising currents of air to spiral around the centre of the tropical cyclone.
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It is at this stage that the cyclone matures and the eye of the storm is created.
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As the air rises and cools,
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some of this dense air descends to form the clear,
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still eye as the cyclone rages around it.
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The eye wall, where the wind is strongest,
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behaves like a whirling cylinder.
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Cyclones rotate clockwise in the southern hemisphere, anti-clockwise in the northern.
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The lowest air pressure in a tropical cyclone is always found at the centre,
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and is typically 950 millibars or less.
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The average air pressure at the Earth's surface is about 1,010 millibars.
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Tropical cyclones have significantly lower air pressure than the air that surrounds them.
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The bigger the pressure difference,
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the stronger the wind force.
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One of the lowest air pressures ever recorded was 877 millibars for Typhoon Ida,
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which hit the Philippines in 1958,
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where winds reached 300 kilometres an hour.
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Once formed, the cyclone's movement or track follows a pathway away from its source,
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driven by global wind circulation.
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As warm ocean waters feed it heat and moisture,
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the cyclone continues to enlarge.
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Thank you.
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Woordenschat en spreektips bij deze les
Deze spreekles op niveau C2 is gebaseerd op de video “Formation Of A Tropical Cyclone”. Deze woorden komen het vaakst terug: cyclone, rises, wind, stage, tropical. Deze video bevat 51 zinnen en 473 woorden om na te spreken. Het gesproken deel duurt 3:41. De spreker praat in een gelijkmatig tempo van ongeveer 128 woorden per minuut, prettig om te shadowen. Slechts 75% van de woorden hoort bij de 3.000 meest gebruikte Engelse woorden, dus de woordenschat is pittig.
Belangrijke woorden in deze video
De 15 moeilijkste woorden uit de video, met uitspraak en betekenis:
| Woord | Uitspraak | Betekenis |
|---|---|---|
| cyclone zelfstandig naamwoord | /ˈsaɪ.kloʊn/ | cycloon, wervelstorm |
| moisture zelfstandig naamwoord | /ˈmɔɪs.t͡ʃɚ/ | vocht |
| clockwise bijwoord | /ˈklɒkwaɪz/ | rechtsom, met de klok mee |
| coincide werkwoord | /ˌkoʊɪnˈsaɪd/ | samenvallen, coïncideren |
| condensation zelfstandig naamwoord | /ˌkɒn.dɛnˈseɪ.ʃən/ | condensatie |
| condense werkwoord | /kənˈdɛns/ | verdichten |
| dissipation zelfstandig naamwoord | /ˌdɪsɪˈpeɪʃən/ | verspreiding |
| enlarge werkwoord | /ɪnˈlɑɹd͡ʒ/ | uitvergroten, vergroten |
| evaporate werkwoord | /ɪˈvæp.ə.ɹeɪt/ | verdampen |
| kilometre zelfstandig naamwoord | /kɪˈlɑmɪtəɹ/ | kilometer |
| latent bijvoeglijk naamwoord | /ˈleɪ.tənt/ | latent |
| troposphere zelfstandig naamwoord | /ˈtɹoʊpəsfɪɚ/ | troposfeer |
| weaken werkwoord | /ˈwikən/ | verzwakken |
| vapor zelfstandig naamwoord | /ˈveɪpɚ/ | damp |
| rotate werkwoord | /ˈɹoʊ.teɪt/ | roteren, ronddraaien |
Uitspraak om op te letten
- De “th”-klanken: pathway /ˈpæθˌweɪ/, strengthen /ˈstɹɛŋ(k)θən/
- De klanken “sh” en “zh”: condensation /ˌkɒn.dɛnˈseɪ.ʃən/, dissipation /ˌdɪsɪˈpeɪʃən/, circulation /ˌsɝkjʊˈleɪʃən/, rotation /ɹoʊˈteɪʃən/
- Lange woorden — let op de klemtoon: condensation /ˌkɒn.dɛnˈseɪ.ʃən/, dissipation /ˌdɪsɪˈpeɪʃən/, evaporate /ɪˈvæp.ə.ɹeɪt/, kilometre /kɪˈlɑmɪtəɹ/, circulation /ˌsɝkjʊˈleɪʃən/
Klanken die Nederlandstaligen lastig vinden:
- Stemhebbende eindmedeklinker — /b/, /d/, /g/, /z/, /v/ niet verscherpen: clockwise /ˈklɒkwaɪz/, coincide /ˌkoʊɪnˈsaɪd/, enlarge /ɪnˈlɑɹd͡ʒ/, descend /dəˈsɛnd/, upwards /ˈʌpwɚdz/
- /æ/ — opener dan de Nederlandse “e”: evaporate /ɪˈvæp.ə.ɹeɪt/, pathway /ˈpæθˌweɪ/, altitude /ˈælt.ɪˌtjuːd/, axis /ˈæksɪs/
- /w/ — met ronde lippen: clockwise /ˈklɒkwaɪz/, weaken /ˈwikən/, upwards /ˈʌpwɚdz/, pathway /ˈpæθˌweɪ/
Zo oefen je met deze video
- Luister de hele video één keer zonder te spreken en noteer de woorden die je niet kent.
- Spreek zin voor zin na op normale snelheid en herhaal elke zin tot je ritme gelijk is aan dat van de spreker.
- Neem jezelf op en vergelijk met het origineel; let daarbij op woorden als cyclone, moisture, clockwise.
Wat is de Shadowing-techniek?
Shadowing is een wetenschappelijk onderbouwde taalleermethode die oorspronkelijk is ontwikkeld voor professionele tolkentraining en gepopulariseerd door polyglot Dr. Alexander Arguelles. De methode is eenvoudig maar krachtig: je luistert naar native Engelse audio en herhaalt het onmiddellijk hardop — als een schaduw die de spreker volgt met slechts 1–2 seconden vertraging. In tegenstelling tot passief luisteren of grammaticadrills, dwingt shadowing je hersenen en mondspieren om echte spraakpatronen tegelijkertijd te verwerken en te reproduceren. Onderzoek toont aan dat het de uitspraaknauwkeurigheid, intonatie, ritme, verbonden spraak, luisterbegrip en spreekvaardigheid aanzienlijk verbetert — waardoor het een van de meest effectieve methoden is voor IELTS Speaking-voorbereiding en echte Engelse communicatie.